{"id":404515,"date":"2025-01-11T08:06:35","date_gmt":"2025-01-11T08:06:35","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/correct-usage-of-mapfoldw-iterator\/"},"modified":"2025-01-13T09:54:42","modified_gmt":"2025-01-13T09:54:42","slug":"correct-usage-of-mapfoldw-iterator","status":"answered","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/correct-usage-of-mapfoldw-iterator\/","title":{"rendered":"Correct usage of “mapfoldw” iterator."},"content":{"rendered":"

<p><div>In Scade Language Reference 8.5 Operator Application and Higher-Order Patterns<\/code>, it illustrated that the usage of foldw<\/code>:<\/div><div> <\/div><div><\/code><\/p><div>idx, acc = (foldw op << size >> if cond0)(acc0, A1,...,An)<\/div><div><\/code><\/code><\/div><div> <\/div><div>is equivalent to particular form of mapfoldw<\/code>:<\/div><div> <\/div><div><\/code><\/div><div>idx, _, acc = (mapfoldw 1 op << size >> if cond0)(acc0, A1, ..., An)<\/div><div><\/code><\/code><\/div><div> <\/div><div>Should it be the following form instead?<\/div><div><\/code><\/div><div>idx, _, acc = (mapfoldw 1 op << size >> if cond0 default ())(acc0, A1, ..., An)<\/div><div><\/code><\/code><\/div><div> <\/div><div>Because the syntax definition of mapfoldw<\/code> is <\/div><div><\/code><\/div><div>operator ::= (iterator_mw operator << size >> if expr default expr)<\/div><div>iterator_mw ::= mapfoldw [[ INTEGER ]]<\/div><div><\/code><\/code><\/div><\/div><\/p>\n","protected":false},"template":"","class_list":["post-404515","topic","type-topic","status-answered","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t